A former Yuba County deputy sheriff, former U.S. postal worker, and two others have been indicted in what federal prosecutors say was a $500,000 drug-trafficking operation that shipped about 200 pounds of marijuana through the mail between Oroville, 90 miles north of Sacramento, and York County, Pennsylvania.

The indictment, announced Thursday by the federal prosecutor in Harrisburg, says the four residents of Oroville, California, conspired to make and distribute marijuana and to launder drug proceeds between September 2014 and Jan. 7 of this year.